5-Bromo-2,2-difluoro-1,3-benzodioxole5-Bromo-2,2-difluoro-1,3-benzodioxole 98%4-Bromo-1,2-(difluoromethylenedioxy)benzene5-Bromo-2,2-difluoro-1,3-benzodioxole5-溴-2,2-二氟-1,3-苯并二噁唑3,4-[(Difluoromethylene)dioxy]bromobenzene4-Bromo-1,2-[(difluoromethylene)dioxy]benzene